lower left abdomen pain

Last sunday I had a large meal in the noon. The next day, I had a hard stomach with heavy belchings, with constipation and loss of appetite. The condition lasted for 2 days. I used rekool-d and sporolac upon my doctors advice on phone. My belchings and hard stomach were gone by tuesday but now I feel a consistent pain in my lower left abdomen, not sharp but disturbing. My stools are loose now with dark green kind of color (no blood). I still have the acidity problem in a less intensity with loss of apetite. Pleae advice.
Note: Last month I was diagnosed with enteric fever, hepatosplenomegaly, and the ultrasound abdomen taken at that time shows no signs of kidney or gall bladder stones.